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-rw-r--r--board/etin/debris/phantom.c301
1 files changed, 0 insertions, 301 deletions
diff --git a/board/etin/debris/phantom.c b/board/etin/debris/phantom.c
deleted file mode 100644
index 3d5aa14..0000000
--- a/board/etin/debris/phantom.c
+++ /dev/null
@@ -1,301 +0,0 @@
-/*
- * board/eva/phantom.c
- *
- * Phantom RTC device driver for EVA
- *
- * Author: Sangmoon Kim
- * dogoil@etinsys.com
- *
- * Copyright 2002 Etinsys Inc.
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-#include <command.h>
-#include <rtc.h>
-
-#if defined(CONFIG_CMD_DATE)
-
-#define RTC_BASE (CONFIG_SYS_NVRAM_BASE_ADDR + 0x7fff8)
-
-#define RTC_YEAR ( RTC_BASE + 7 )
-#define RTC_MONTH ( RTC_BASE + 6 )
-#define RTC_DAY_OF_MONTH ( RTC_BASE + 5 )
-#define RTC_DAY_OF_WEEK ( RTC_BASE + 4 )
-#define RTC_HOURS ( RTC_BASE + 3 )
-#define RTC_MINUTES ( RTC_BASE + 2 )
-#define RTC_SECONDS ( RTC_BASE + 1 )
-#define RTC_CENTURY ( RTC_BASE + 0 )
-
-#define RTC_CONTROLA RTC_CENTURY
-#define RTC_CONTROLB RTC_SECONDS
-#define RTC_CONTROLC RTC_DAY_OF_WEEK
-
-#define RTC_CA_WRITE 0x80
-#define RTC_CA_READ 0x40
-
-#define RTC_CB_OSC_DISABLE 0x80
-
-#define RTC_CC_BATTERY_FLAG 0x80
-#define RTC_CC_FREQ_TEST 0x40
-
-
-static int phantom_flag = -1;
-static int century_flag = -1;
-
-static uchar rtc_read(unsigned int addr)
-{
- return *(volatile unsigned char *)(addr);
-}
-
-static void rtc_write(unsigned int addr, uchar val)
-{
- *(volatile unsigned char *)(addr) = val;
-}
-
-static unsigned char phantom_rtc_sequence[] = {
- 0xc5, 0x3a, 0xa3, 0x5c, 0xc5, 0x3a, 0xa3, 0x5c
-};
-
-static unsigned char* phantom_rtc_read(int addr, unsigned char rtc[8])
-{
- int i, j;
- unsigned char v;
- unsigned char save = rtc_read(addr);
-
- for (j = 0; j < 8; j++) {
- v = phantom_rtc_sequence[j];
- for (i = 0; i < 8; i++) {
- rtc_write(addr, v & 1);
- v >>= 1;
- }
- }
- for (j = 0; j < 8; j++) {
- v = 0;
- for (i = 0; i < 8; i++) {
- if(rtc_read(addr) & 1)
- v |= 1 << i;
- }
- rtc[j] = v;
- }
- rtc_write(addr, save);
- return rtc;
-}
-
-static void phantom_rtc_write(int addr, unsigned char rtc[8])
-{
- int i, j;
- unsigned char v;
- unsigned char save = rtc_read(addr);
- for (j = 0; j < 8; j++) {
- v = phantom_rtc_sequence[j];
- for (i = 0; i < 8; i++) {
- rtc_write(addr, v & 1);
- v >>= 1;
- }
- }
- for (j = 0; j < 8; j++) {
- v = rtc[j];
- for (i = 0; i < 8; i++) {
- rtc_write(addr, v & 1);
- v >>= 1;
- }
- }
- rtc_write(addr, save);
-}
-
-static int get_phantom_flag(void)
-{
- int i;
- unsigned char rtc[8];
-
- phantom_rtc_read(RTC_BASE, rtc);
-
- for(i = 1; i < 8; i++) {
- if (rtc[i] != rtc[0])
- return 1;
- }
- return 0;
-}
-
-void rtc_reset(void)
-{
- if (phantom_flag < 0)
- phantom_flag = get_phantom_flag();
-
- if (phantom_flag) {
- unsigned char rtc[8];
- phantom_rtc_read(RTC_BASE, rtc);
- if(rtc[4] & 0x30) {
- printf( "real-time-clock was stopped. Now starting...\n" );
- rtc[4] &= 0x07;
- phantom_rtc_write(RTC_BASE, rtc);
- }
- } else {
- uchar reg_a, reg_b, reg_c;
- reg_a = rtc_read( RTC_CONTROLA );
- reg_b = rtc_read( RTC_CONTROLB );
-
- if ( reg_b & RTC_CB_OSC_DISABLE )
- {
- printf( "real-time-clock was stopped. Now starting...\n" );
- reg_a |= RTC_CA_WRITE;
- reg_b &= ~RTC_CB_OSC_DISABLE;
- rtc_write( RTC_CONTROLA, reg_a );
- rtc_write( RTC_CONTROLB, reg_b );
- }
-
- /* make sure read/write clock register bits are cleared */
- reg_a &= ~( RTC_CA_WRITE | RTC_CA_READ );
- rtc_write( RTC_CONTROLA, reg_a );
-
- reg_c = rtc_read( RTC_CONTROLC );
- if (( reg_c & RTC_CC_BATTERY_FLAG ) == 0 )
- printf( "RTC battery low. Clock setting may not be reliable.\n");
- }
-}
-
-static int get_century_flag(void)
-{
- int flag = 0;
- int bcd, century;
- bcd = rtc_read( RTC_CENTURY );
- century = bcd2bin( bcd & 0x3F );
- rtc_write( RTC_CENTURY, bin2bcd(century+1));
- if (bcd == rtc_read( RTC_CENTURY ))
- flag = 1;
- rtc_write( RTC_CENTURY, bcd);
- return flag;
-}
-
-int rtc_get( struct rtc_time *tmp)
-{
- if (phantom_flag < 0)
- phantom_flag = get_phantom_flag();
-
- if (phantom_flag)
- {
- unsigned char rtc[8];
-
- phantom_rtc_read(RTC_BASE, rtc);
-
- tmp->tm_sec = bcd2bin(rtc[1] & 0x7f);
- tmp->tm_min = bcd2bin(rtc[2] & 0x7f);
- tmp->tm_hour = bcd2bin(rtc[3] & 0x1f);
- tmp->tm_wday = bcd2bin(rtc[4] & 0x7);
- tmp->tm_mday = bcd2bin(rtc[5] & 0x3f);
- tmp->tm_mon = bcd2bin(rtc[6] & 0x1f);
- tmp->tm_year = bcd2bin(rtc[7]) + 1900;
- tmp->tm_yday = 0;
- tmp->tm_isdst = 0;
-
- if( (rtc[3] & 0x80) && (rtc[3] & 0x40) ) tmp->tm_hour += 12;
- if (tmp->tm_year < 1970) tmp->tm_year += 100;
- } else {
- uchar sec, min, hour;
- uchar mday, wday, mon, year;
-
- int century;
-
- uchar reg_a;
-
- if (century_flag < 0)
- century_flag = get_century_flag();
-
- reg_a = rtc_read( RTC_CONTROLA );
- /* lock clock registers for read */
- rtc_write( RTC_CONTROLA, ( reg_a | RTC_CA_READ ));
-
- sec = rtc_read( RTC_SECONDS );
- min = rtc_read( RTC_MINUTES );
- hour = rtc_read( RTC_HOURS );
- mday = rtc_read( RTC_DAY_OF_MONTH );
- wday = rtc_read( RTC_DAY_OF_WEEK );
- mon = rtc_read( RTC_MONTH );
- year = rtc_read( RTC_YEAR );
- century = rtc_read( RTC_CENTURY );
-
- /* unlock clock registers after read */
- rtc_write( RTC_CONTROLA, ( reg_a & ~RTC_CA_READ ));
-
- tmp->tm_sec = bcd2bin( sec & 0x7F );
- tmp->tm_min = bcd2bin( min & 0x7F );
- tmp->tm_hour = bcd2bin( hour & 0x3F );
- tmp->tm_mday = bcd2bin( mday & 0x3F );
- tmp->tm_mon = bcd2bin( mon & 0x1F );
- tmp->tm_wday = bcd2bin( wday & 0x07 );
-
- if (century_flag) {
- tmp->tm_year = bcd2bin( year ) +
- ( bcd2bin( century & 0x3F ) * 100 );
- } else {
- tmp->tm_year = bcd2bin( year ) + 1900;
- if (tmp->tm_year < 1970) tmp->tm_year += 100;
- }
-
- tmp->tm_yday = 0;
- tmp->tm_isdst= 0;
- }
-
- return 0;
-}
-
-int rtc_set( struct rtc_time *tmp )
-{
- if (phantom_flag < 0)
- phantom_flag = get_phantom_flag();
-
- if (phantom_flag) {
- uint year;
- unsigned char rtc[8];
-
- year = tmp->tm_year;
- year -= (year < 2000) ? 1900 : 2000;
-
- rtc[0] = bin2bcd(0);
- rtc[1] = bin2bcd(tmp->tm_sec);
- rtc[2] = bin2bcd(tmp->tm_min);
- rtc[3] = bin2bcd(tmp->tm_hour);
- rtc[4] = bin2bcd(tmp->tm_wday);
- rtc[5] = bin2bcd(tmp->tm_mday);
- rtc[6] = bin2bcd(tmp->tm_mon);
- rtc[7] = bin2bcd(year);
-
- phantom_rtc_write(RTC_BASE, rtc);
- } else {
- uchar reg_a;
- if (century_flag < 0)
- century_flag = get_century_flag();
-
- /* lock clock registers for write */
- reg_a = rtc_read( RTC_CONTROLA );
- rtc_write( RTC_CONTROLA, ( reg_a | RTC_CA_WRITE ));
-
- rtc_write( RTC_MONTH, bin2bcd( tmp->tm_mon ));
-
- rtc_write( RTC_DAY_OF_WEEK, bin2bcd( tmp->tm_wday ));
- rtc_write( RTC_DAY_OF_MONTH, bin2bcd( tmp->tm_mday ));
- rtc_write( RTC_HOURS, bin2bcd( tmp->tm_hour ));
- rtc_write( RTC_MINUTES, bin2bcd( tmp->tm_min ));
- rtc_write( RTC_SECONDS, bin2bcd( tmp->tm_sec ));
-
- /* break year up into century and year in century */
- if (century_flag) {
- rtc_write( RTC_YEAR, bin2bcd( tmp->tm_year % 100 ));
- rtc_write( RTC_CENTURY, bin2bcd( tmp->tm_year / 100 ));
- reg_a &= 0xc0;
- reg_a |= bin2bcd( tmp->tm_year / 100 );
- } else {
- rtc_write(RTC_YEAR, bin2bcd(tmp->tm_year -
- ((tmp->tm_year < 2000) ? 1900 : 2000)));
- }
-
- /* unlock clock registers after read */
- rtc_write( RTC_CONTROLA, ( reg_a & ~RTC_CA_WRITE ));
- }
-
- return 0;
-}
-
-#endif
generated by cgit v1.1 at 2024-11-30 10:50:37 +0000